It didn't give me double vision but it made my pupils MAX dilated so I needed reading glasses because I couldn't see close and I wear contacts to see far away but if i take them off, I can see close but not far.

I was on 6mg a day but be careful when eating and swallowing cuz it dries you out. I almost choked over 10 times. If you are about to choke, don't swallow just keep it in that position and get a drink.